Yuanfang Chen f927021410 Reland "[clang-cl] Support the /JMC flag"
This relands commit b380a31de084a540cfa38b72e609b25ea0569bb7.

Restrict the tests to Windows only since the flag symbol hash depends on
system-dependent path normalization.
2022-02-10 15:16:17 -08:00
..
2022-02-01 12:32:27 -06:00